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Crecimiento de scenedesmus quadricauda en efluentes cloacales de la ciudad de Trelew, Chubut, Argentina
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Date
2010
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Scenedesmus quadricauda growth in sewage effluents of Trelew city, Chubut, ArgentinaAbstract
La creciente problemática frente al tratamiento de aguas residuales y su posible reuso ha planteado sistemas biológicos que remuevan los contaminantes manteniendo el ecosistema y disminuyendo costos. Este trabajo consiste en un ensayo de biorremediación evaluando la tasa de crecimiento de Scenedesmus quadricauda cultivada en efluentes domiciliarios de la ciudad de Trelew, Chubut, Argentina. Diariamente se determina conductividad, pH y densidad celular. Al inicio y al final de ensayo se obtienen valores para fosfato, fósforo total, sulfuro, amoníaco, nitrito, nitrato, detergentes, DBO5, DQO y número más probable de coliformes totales y fecales. Se observa una disminución en amoníaco, fósforo, fósforo total, DBO5 y DQO lo que confirma la efectividad en la remoción de nutrientes en aguas residuales de naturaleza orgánica. Por ello, S. quadricauda se plantea como una posible alternativa de bajo costo para la descontaminación de aguas residuales urbanas.The growing problem against the waste water treatment and its possible reuse has raised biological systems that remove the polluting agents preserving the ecosystem and diminishing costs. This work consists of a bioremediation test evaluating the growth rate of Scenedesmus quadricauda cultivated in Municipal Wastewater of Trelew city, Chubut, Argentina. Conductivity, pH and cellular density are determined daily. Values for phosphate, total phosphorus, sulfide, ammonia, nitrite, nitrate, detergents, DBO5, DQO and more probable number of total and faecal coliforms are obtained at the beginning and the end of the test. A diminution is observed in ammonia, phosphorus, total phosphorus, DBO5 and DQO which confirms its effectiveness in nutrient removal of organic nature waste water. So, S. quadricauda is presented as a possible alternative of low cost for urban water residual decontamination.
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